add state param generation

1 files changed, 37 insertions, 0 deletions

diff --git a/rust/src/database_models.rs b/rust/src/database_models.rs
index 9aebb0f9..0e138439 100644
--- a/rust/src/database_models.rs
+++ b/rust/src/database_models.rs
@@ -2,10 +2,33 @@ use chrono;
 //use serde_json;
 use database_schema::*;
 use uuid::Uuid;
+use errors::*;
 
 // Ugh. I thought the whole point was to *not* do this, but:
 // https://github.com/diesel-rs/diesel/issues/1589
 
+pub enum EntityState {
+    WorkInProgress,
+    Active(i64),
+    Redirect(Uuid, i64),
+    Deleted,
+}
+
+impl EntityState {
+    pub fn shortname(&self) -> String {
+        match self {
+            EntityState::WorkInProgress => "wip",
+            EntityState::Active(_) => "active",
+            EntityState::Redirect(_,_) => "redirect",
+            EntityState::Deleted => "deleted",
+        }.to_string()
+    }
+}
+
+pub trait EntityIdentRow {
+    fn state(&self) -> Result<EntityState>;
+}
+
 // Helper for constructing tables
 macro_rules! entity_structs {
     ($edit_table:expr, $edit_struct:ident, $ident_table:expr, $ident_struct:ident) => {
@@ -28,6 +51,20 @@ macro_rules! entity_structs {
             pub rev_id: Option<i64>,
             pub redirect_id: Option<Uuid>,
         }
+
+        impl EntityIdentRow for $ident_struct {
+            fn state(&self) -> Result<EntityState> {
+                if !self.is_live {
+                    return Ok(EntityState::WorkInProgress);
+                }
+                match (self.redirect_id, self.rev_id) {
+                    (None, None) => Ok(EntityState::Deleted),
+                    (Some(redir), Some(rev)) => Ok(EntityState::Redirect(redir, rev)),
+                    (None, Some(rev)) => Ok(EntityState::Active(rev)),
+                    _ => bail!("Invalid EntityIdentRow state")
+                }
+            }
+        }
     };
 }